[WEEX-368][Android] Turn single process switch on
[WEEX-368][Android] Turn single process switch on

Turn single process switch on for jsengine.
Make it can run on single process

Bug: WEEX-368

KalicyZhou/incubator-weex,alibaba/weex,acton393/incubator-weex,erha19/incubator-weex,acton393/incubator-weex,Hanks10100/incubator-weex,KalicyZhou/incubator-weex,alibaba/weex,alibaba/weex,Hanks10100/incubator-weex,Hanks10100/incubator-weex,miomin/incubator-weex,erha19/incubator-weex,miomin/incubator-weex,Hanks10100/incubator-weex,erha19/incubator-weex,miomin/incubator-weex,alibaba/weex,erha19/incubator-weex,acton393/incubator-weex,acton393/incubator-weex,Hanks10100/incubator-weex,erha19/incubator-weex,acton393/incubator-weex,alibaba/weex,erha19/incubator-weex,miomin/incubator-weex,miomin/incubator-weex,Hanks10100/incubator-weex,erha19/incubator-weex,Hanks10100/incubator-weex,miomin/incubator-weex,KalicyZhou/incubator-weex,alibaba/weex,acton393/incubator-weex,acton393/incubator-weex,miomin/incubator-weex,KalicyZhou/incubator-weex,miomin/incubator-weex,KalicyZhou/incubator-weex,erha19/incubator-weex,acton393/incubator-weex,alibaba/weex,Hanks10100/incubator-weex,KalicyZhou/incubator-weex